Contact Kraken support 1844-291-4941 𝐊𝐫𝐚𝐤𝐞𝐧 𝐓𝐫𝐚𝐧𝐬𝐟𝐞𝐫 𝐂𝐫𝐲𝐩𝐭𝐨Cryptocurrency, or crypto, is a digital or virtual currency that uses cryptography for security. A cryptocurrency is difficult to counterfeit because of this security feature. A defining feature of cryptocurrencies is that they are generally not issued by any central authority, rendering them theoretically immune to government interference or manipulation.